Dlyfull UT4 Universal 4-Slot Battery Charger Instruction Manual

1. Introduction

The Dlyfull UT4 is a versatile 4-slot battery charger designed to accommodate a wide range of rechargeable battery types, including Li-ion, IMR, INR, ICR, Ni-MH, Ni-Cd, and LiFePO4. It features multiple operating modes such as Charge, Discharge, Refresh, and Test, along with a USB power bank function. This manual provides detailed instructions for safe and efficient use of your Dlyfull UT4 charger.

2. Safety Precautions

• Use the charger only with compatible battery types as specified in this manual. Attempting to charge incompatible batteries may result in damage or injury.
• Do not disassemble, modify, or short-circuit the charger.
• Avoid exposing the charger to water, high humidity, or extreme temperatures.
• Keep the charger away from children and pets.
• Ensure proper ventilation during operation to prevent overheating.
• Disconnect the power supply when the charger is not in use or during cleaning.
• If any unusual behavior or damage is observed, discontinue use immediately and contact support.
• Note: Batteries are not included with this product.

3. Product Overview

3.1 Components

The Dlyfull UT4 charger features four independent charging slots, an LCD display, and two control buttons.

Image: Front view of the Dlyfull UT4 charger, showing the LCD screen, four battery slots, and two control buttons (MODE and SLOT).

3.2 Key Features

• Universal Compatibility: Supports 3.7V Li-ion, 3.2V LiFePO4, IMR, INR, ICR, and 1.2V Ni-MH/Ni-Cd batteries.
• Multiple Operating Modes: Charge, Discharge, Refresh, and Test.
• Intelligent LCD Display: A high-resolution LCD screen displays current operating mode, battery type, voltage (V), current (A), capacity (mAh), temperature (°C), and time (h), providing comprehensive status information.
• Fast Charging: The charger utilizes adaptive current technology, automatically adjusting the charging current up to 2A. A 2000mAh battery can be fully charged in approximately 1 hour. Input: USB Type-C 5V/2A.
• USB Power Bank Function: Use a Li-ion battery in slot 1 to charge external devices via the USB output (5V/2A).
• Safety Protections: The charger incorporates overcharge, overcurrent, overvoltage, temperature control, and short-circuit protection.
• USB Type-C Input: 5V/2A input for power supply.

Image: The Dlyfull UT4 charger with icons representing its safety features: overcharge protection, overcurrent protection, overvoltage protection, temperature control, and short-circuit protection.

4. Setup

1. Connect Power: Connect the USB Type-C cable to the charger's input port and the other end to a 5V/2A USB power adapter (not included), PC, car charger, or power bank.


Image: The Dlyfull UT4 charger with its USB-C input port, illustrating connection to a USB adapter, PC, car charger, solar panel, or power bank.

2. Insert Batteries: Carefully insert up to four compatible rechargeable batteries into the charging slots. Ensure correct polarity (+/-). The charger will automatically detect Ni-MH/Ni-Cd/Li-Ion batteries. For LiFePO4 batteries, manual selection is required (see Operating Modes).

5. Operating Modes

The Dlyfull UT4 offers four primary operating modes: Charge, Discharge, Refresh, and Test. Use the MODE and SLOT buttons to navigate and select functions.

Image: The Dlyfull UT4 charger's LCD screen displaying the available modes (Charge, Discharge, Refresh, Test) and battery slot indicators, with labels for battery type, voltage, capacity, temperature, current, and time.

5.1 Mode Selection

1. After inserting a battery, the charger will display information for that slot.
2. Press the SLOT button to select the desired battery slot (1, 2, 3, or 4).
3. Press the MODE button to cycle through the available operating modes: Charge, Discharge, Refresh, Test.
4. Once the desired mode is selected, the operation will begin automatically after a few seconds of inactivity, or you can press the MODE button again to confirm.
5. For LiFePO4 batteries, after inserting, press the MODE button to manually select "LiFePO4" as the battery type.

Image: A close-up showing fingers interacting with the 'MODE' and 'SLOT' touch buttons on the Dlyfull UT4 charger's interface.

5.2 Mode Descriptions

• Charge: Standard charging function. The charger will automatically detect the battery type (except LiFePO4) and apply an adaptive charging current.
• Discharge: Discharges the battery to eliminate memory effect, particularly useful for Ni-Cd batteries.
• Refresh: Cycles the battery through discharge and charge cycles to restore its maximum capacity, often used for older batteries.
• Test: Measures and displays the actual capacity of the battery by fully discharging and then fully charging it. This process can take several hours.

5.3 Power Bank Function

The Dlyfull UT4 can function as a power bank to charge external devices. This function is available when a Li-ion battery is inserted into Slot 1.

1. Ensure a charged Li-ion battery is in Slot 1.
2. Disconnect the charger from its main power input (USB-C).
3. Connect your external device (e.g., smartphone, MP3 player, tablet) to the USB-A output port on the charger.
4. The charger will begin supplying 5V/2A power to your device.

Image: The Dlyfull UT4 charger with a Li-ion battery in slot 1, connected via its USB-A output to a smartphone, demonstrating its power bank capability.

6. Compatible Batteries

The Dlyfull UT4 charger supports a wide range of battery sizes and chemistries:

• 3.7V Li-ion / IMR / INR / ICR: 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14350, 14430, 14500, 14650, 16500, 16340 (RCR123A), 16650, 17350, 17500, 17650, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650, 32650.
• 3.2V LiFePO4: (Same sizes as Li-ion, manual selection required).
• 1.2V Ni-MH / Ni-Cd: A, AA, AAA, AAAA, C, SC, D.

Image: A visual representation of the Dlyfull UT4 charger's compatibility with various battery types, including 1.2V Ni-MH/Ni-Cd and 3.6V/3.7V Li-ion, and 3.2V LiFePO4 batteries, listing common sizes.

7. LCD Display Information

The intelligent LCD screen provides comprehensive real-time data:

• Mode: Indicates the current operating mode (Charge, Discharge, Refresh, Test).
• Battery Type: Displays detected or selected battery chemistry (Li-ion, LiFePO4, Ni-MH/Ni-Cd).
• Voltage (V): Current battery voltage.
• Current (A): Current charging or discharging amperage.
• Capacity (mAh): Accumulated capacity during charge/discharge or tested capacity.
• Temperature (°C): Internal temperature of the charger or battery.
• Time (h): Elapsed time for the current operation.
• Slot Number: Indicates which battery slot's information is currently displayed.

8. Maintenance

• Clean the charger regularly with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Keep the charging slots free from dust and debris to ensure proper contact.
• Store the charger in a cool, dry place when not in use.
• Avoid dropping or subjecting the charger to strong impacts.

9. Troubleshooting

10. Specifications

• Input: USB Type-C 5V/2A
• Output (Charging): Adaptive current (up to 2A per slot, automatically adjusted)
• Output (USB Power Bank): 5V/2A (from Slot 1 with Li-ion battery)
• Compatible Battery Types:
  • 3.7V Li-ion / IMR / INR / ICR (e.g., 18650, 21700, 26650)
  • 3.2V LiFePO4 (manual selection required)
  • 1.2V Ni-MH / Ni-Cd (e.g., AA, AAA, C, D)
• Operating Modes: Charge, Discharge, Refresh, Test
• Display: LCD with backlight
• Weight: 279.99 Grams
• UPC: 742354393468

11. Warranty and Support

For warranty information and technical support, please refer to the official Dlyfull website or contact your retailer. Keep your purchase receipt as proof of purchase.

Manufacturer: Dlyfull